Calculate wallpaper rolls using wall size, roll dimensions, pattern repeat, waste and price.
Enter your measurements
Use consistent units and check product packaging before purchasing.
How to use this tool
- Measure the total width and height of the walls.
- Enter the wallpaper roll width and length.
- Add the pattern repeat shown by the manufacturer.
- Choose a waste allowance and enter the price per roll.
Frequently asked questions
What is pattern repeat?
Pattern repeat is the vertical distance before the design begins again. Matching the pattern can create offcuts and increase the number of rolls needed.
Should doors and windows be deducted?
Small openings are normally left in the estimate because offcuts are useful around them. For very large openings, reduce the total wall width carefully.
What waste percentage should I use?
Ten percent is a practical starting point. Use fifteen percent for large patterns, sloped walls or first-time installation.
Are double rolls handled?
Enter the exact width and total length printed on the product label, whether the retailer calls it a single or double roll.